Q.I have a drawing of a plastic-moulded part with a minimum, as well as, a maximum, Ra tolerance for the surface finish. The surface in question, seal on an 'o' ring, to prevent fluid leakage. Is there any reason why I would not want less than the minimum Ra (0.2 in this case...
Function:Weighing Scale, Counting Scales; Structure:Mechanical and Electronic Scale; Shape:Polygon; Accuracy Class:Chinese GB/T 11883-2002class III; Maximum Amount of Tare:<30% Max; Display:Eight-Segment LED Digital Tube Display or LCD;
In materials synthesis, such scales are typically the physicochemical conditions in which that synthesis takes place, i.e., parameters such as T or p. If the values that the latter parameters occupy are extreme or not depends on the frame of reference: a given T can be ‘extreme’ in one...